body {
  font-family: "Segoe UI", sans-serif;
  background-color: #f2f4f8;
}

h3 {
  text-align: center;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
  color: #1f4b78;
  font-weight: 700;
}

.calendar-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

/* ── AY card ── */
.calendar-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  margin-bottom: 2rem;
  overflow: hidden;
  transition: transform 0.2s ease;
}
.calendar-card:hover {
  transform: scale(1.01);
}

.card-header-custom {
  background-color: #1f4b78;
  color: white;
  padding: 1rem 1.5rem;
  font-size: 1.2rem;
  font-weight: 600;
}

/* ── Year rows ── */
.year-row {
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e9ecef;
}
.year-row:last-child {
  border-bottom: none;
}

.year-label {
  font-size: 1.05rem;
  font-weight: 500;
  color: #333;
}

.click-link {
  text-decoration: none;
  font-weight: 600;
  color: #1f4b78;
  transition: 0.2s;
}
.click-link:hover {
  text-decoration: underline;
  color: #1f4b78;
}

.click-link.unavailable {
  color: #aaa;
  pointer-events: none;
  font-weight: 500;
  font-style: italic;
}

/* ── Toggle button ── */
.btn-outline-primary {
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  color: #1f4b78;
  border-color: #1f4b78;
}
.btn-outline-primary:hover {
  background-color: #1f4b78;
  color: white;
  border-color: #1f4b78;
}

/* ── Previous section links ── */
.single-calendar-link {
  display: block;
  color: #1f4b78;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  padding: 1.2rem 1.5rem;
  margin-bottom: 2rem;
  font-weight: 600;
  transition: transform 0.2s;
}
.single-calendar-link:hover {
  transform: scale(1.01);
}
.single-calendar-link a {
  color: #1f4b78;
  text-decoration: none;
  font-weight: 600;
}
.single-calendar-link a:hover {
  text-decoration: underline;
}